﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp1
{
    class Class1
    {
        public static bool Lmi(string[] arr)
        {
            bool a = false;
            if (arr.Length == 0)
            {
                a = true;
            }
            else
            {
                int index = 0;
                foreach (var item in arr)
                {
                    if (item.Equals("null"))
                    {
                        index++;
                    }
                }
                if (index == arr.Length)
                {
                    a = true;
                }
                return a;
            }
        }         
    }
}
